Abstract
In this paper, a space-driven two-stage spur gear system is taken as the research object, and a 10 DOF dynamic model is established. Considering the high load characteristics of the space drive system and the time-varying stiffness and tooth clearance of the gear system, a nonlinear dynamic response analysis was performed. The characteristics of the vibration acceleration, shock and transmission error of the gear system are studied in this paper. This paper analyzes the relationship between backlash and return difference, and derives the theoretical formula between the two. The time-varying stiffness was corrected to make the theoretical model closer to reality. The research in this paper enriches the study on space drive systems and high load gear systems.
Highlights
Reference [1] takes a typical two-stage spur gear system of a wind turbine as the research object, establishes a nonlinear dynamic equation, and gives the excitation to obtain the dynamic response of the shaft, bearing and contact teeth
Reference [2] established a dynamic model of a spur gear pair, including backlash, time-varying stiffness, and static transmission error
The gear system of a high-load space drive mechanism is taken as the research object, and a 10degree-of-freedom nonlinear dynamic model is established in consideration of factors such as backlash and time-varying stiffness
Summary
Reference [1] takes a typical two-stage spur gear system of a wind turbine as the research object, establishes a nonlinear dynamic equation, and gives the excitation to obtain the dynamic response of the shaft, bearing and contact teeth. The model in [2] includes load conditions that change with time, and considering the non-linearity of the contact between the teeth, the nonlinear response of the gear under different loads is studied. Reference [2] established a dynamic model of a spur gear pair, including backlash, time-varying stiffness, and static transmission error. The gear system of a high-load space drive mechanism is taken as the research object, and a 10degree-of-freedom nonlinear dynamic model is established in consideration of factors such as backlash and time-varying stiffness. The calculation formula between return difference and backlash was derived, which will provide theoretical support for subsequent research
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